Application of cylinder in superfinishing machine

The superfinishing machine can use up to 8 pieces of oil stone to superfine the roller at the same time, and 8 pieces of oil stone use 8 independent cylinders to provide pressure. The pneumatic system for controlling these cylinders has the characteristics of small pressure shock, automatic pressure relief after power failure, etc., which can better meet the requirements of ultra-fine technology.

The maximum working pressure of the machine tool pneumatic system is 0.6MPa, and the compressed air entering the machine tool is first filtered, regulated and atomized by the pneumatic triple piece.

The actual number of cylinders used is determined according to the processing requirements of the specific workpiece. The cylinder is mounted on the dovetail rail of the oscillating head of the machine, and is connected by a manual reversing valve directly connected to the cylinder, and compressed air is used to control the up and down movement; when the cylinder moves downward, the oil stone clamped on the cylinder rod of the cylinder is pressed against the surface of the workpiece. And maintain a certain pressure, the pressure is determined by the respective pressure reducing valve according to the processing technology requirements; the cylinder itself has a protection function to avoid the oil stone clip directly contacting the workpiece or the guide roller due to the breakage of the oil stone or the too short oil stone.

During operation, the electromagnetic reversing valve is energized, and the valve handle of each manual reversing valve is pushed inward. At this time, the air passage is disconnected, and the compressed air is manually switched to the valve chamber without the rod chamber through the pressure reducing valve, and the cylinder is combined with the oil stone. Downward, contacting the workpiece, the air in the cylinder cavity of the cylinder is introduced into the atmosphere through the manual reversing valve cavity one-way throttle valve electromagnetic reversing valve.

The size of the one-way throttle valve should be adjusted appropriately to prevent the impact of the oil stone on the workpiece; when the oil stone needs to be replaced or adjusted, the manual reversing valve valve stem is pulled outward (original position). At this time, the cylinder has no rod cavity and The manual reversing valve chamber is connected, the compressed air is introduced into the atmosphere through the vent, the pressure is released, and the cylinder has a rod cavity and a manual reversing valve chamber connected to the compressed air, the cylinder is ascending, the oil stone is lifted, leaving the workpiece (fast return) If the machine is faulty or powered off during operation, the electromagnetic reversing valve is de-energized, the air circuit is turned on, the compressed air pushes the valve stem outward, returns to the original position, the cylinder goes up, and the oil stone is automatically lifted.

(Finish)